Location Of Pll3 Adjustments - HP 8566B Adjustment Manual

17. 20/30 Loop Phase Lock Adjustments
3-156 Adjustments
1. Set the RF Section LINE switch to STANDBY. Remove AlOA4
PLL3 Up Converter Assembly from the RF Section, and install it
on an extender board. Reconnect the cable 7 (violet) to AlOA5J4
SCAN I.1 MHz OUT and the cable 8 (gray) to AlOA4J3 IN 100
MHz.
2. Connect the RF INPUT of the second spectrum analyzer to SMB
test connector AlOA4J4. Refer to Figure 3-80 for the location of
test connector AlOA4J4.
C O N V E R T E R
TOP VIEW
Figure 3-80. Location of PLL3 Adjustments
3. Set the RF Section LINE switch to ON, and key in (j-1,
)
0
SPAN
HZ
4. On the second spectrum analyzer, key in @Z-G@, LSHIFT)
Set the controls of the second spectrum analyzer
as follows:
CENTER FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160 MHz
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200 kHz
RES BW (MANUAL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 kHz
REFERENCE LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . -20 dBm
In addition to the displayed 160 MHz signal, other signals should be
present at AlOA4J4 at approximately 160.3 MHz and 300 kHz.
5. On the second spectrum analyzer, key in MARKER
to position the peak of the displayed 160 MHz
MKR REF
signal at the top CRT graticule line. Then, key in
[
2 dB,
FREQUENCY SPAN
displayed signal by three major graticule divisions.
.
)
50 kHz, [REFERENCELEVEL) STEP @'j @
( ),
PEAK SEARCH
[
ENTER